I always thought this was uttered by (former Texas Governor) Ann Richards, at the 1988 Democratic Convention. Memory is a funny t'ing.
Barry Switzer:
“Some people are born on third base and go through life thinking they hit a triple.”
Ann Richards did say (speaking of George Bush the smarter)
▪ “Poor George, he can't help it-- he was born with a silver foot in his mouth.”
at the Keynote Address to the 1988 Democratic National Convention